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- Feed Preview iOS Development Tips
How to disable iOS 9 App Transport Security in Xcode 7, and fix ‘Could not connect to the server’ errors
Apple made a radical decision with iOS 9, disabling all unsecured HTTP traffic from iOS apps, as a part of App Transport Security. This helps in enforcing security best practices, but in many s...
Notes: The interesting things from WWDC, iOS 9, Swift 2
The WWDC keynote today was great, except for the part where it just wouldn’t end. Tons of new stuff on the development front including Swift 2, iOS 9, CloudKit etc. Here are some notes I gath...
Tip: Avoid retain cycles without doing the strong to weak dance
Retain cycles. We’ve all likely been bitten by it at least once. Especially with the increasing role blocks/closures play in modern day iOS development. As you probably already know, referencin...
How to easily inspect the return value of methods with breakpoints and Xcode’s debugger
I’m sure you’ve often wanted to inspect the return value of a method in Xcode’s debugger with breakpoints. But because you can’t put a breakpoint after the last line of a method, it becom...
RJImageLoader Animation with CAShapeLayer
Michael Villar’s excellent Motion Experiments post had a great image loading animation. RJImageLoader is a recreation of that animation in Objective-C for iOS. If you want to know how it wa...
Replicating Twitter's bird zoom startup animation (in Swift!)
Twitter recently updated its iOS app with a really cool startup animation that transitions from the Default.png to the timeline view. The animation uses the Twitter bird as a window into the time...
Replicating UIScrollView's deceleration with Facebook Pop
Earlier this week Ole Begemann wrote a really great tutorial on how UIScrollViews work , and to explain it effectively, he even created a really simple scroll view, written from scratch . The s...
Experimenting with Facebook's open source animation framework POP
Facebook today open sourced its highly-anticipated animation framework called Pop that powers the animations in the Paper for iOS app. Pop’s methods for defining animations resemble Apple’...
Xcode Release Notes
Xcode Release Notes : Xcode got updated to version 5.1.1 today. Release notes say there are a lot of bug and crash fixes. Hoping Xcode crashes lesser with this update.
The best Xcode plugins
There are a lot of Xcode plugins to augment the IDE with additional features, conveniences etc., but it is a pain to discover and install such plugins. Alcatraz is a really great package manager ...
What happens when you call valueForKey on NSArray or NSSet
I’m slightly familiar with key value coding, but never really used it in any project. But I think I’ve found a good use for KVC, which I didn’t know about: Calling valueForKey on a collec...
This changes everything: Xcode 5.1 can now Quicklook preview, debug UIViews
One of the main reasons why Reveal is so useful is that it lets you see UIViews objects that are not visible on the screen. Xcode 5 added support for previewing UIImage objects , and Apple has ex...
Create your own custom loader UIActivityIndicatorView
Ever wanted to have your own custom loader view instead of iOS’ default spinning circle? If what you want isn’t very complicated, you could probably achieve it very easily using UIImageView...
Shipped an app
UPDATE: We’ve released Design Shots v2.0. You can see what’s new here . So me and my friend shipped this app called Design Shots for scrolling through great designs on Dribbble . Total dev...
Xcode tip: See who committed a certain line in a file
Working on a project with multiple people and discovered a glaring bug? There’s an easy way to see who was responsible for committing it using Xcode’s advanced source control features. Just...
Monitor changes to an @property with this simple tip (And no extra code!)
Ever wanted to monitor changes to a property of a class? I would initially implement a custom setter for the property and then add a breakpoint in that function, but there’s an easier way. Ju...
Search for methods easily in a file or project
Finding methods in a huge file can be a tough task, especially if you use the usual Find option and have to jump over all the method calls to finally arrive at the method definition. Fortunately,...
Painless, easy UIImage debugging
If you’ve tried to create a UIImage instance from data fetched over the network, you know the errors that could come up. To easily verify if your image has been initialised correctly, you can u...
Use breakpoints instead of NSLog statements
You’ve probably tried to debug logic flow or inspect the content of the parameters in your method by adding NSLog statements and re-compiling your app. There’s a much better and quicker way...
Facebook engineer talks about the company’s iOS...
Facebook engineer talks about the company’s iOS development process. Some nice tips about threads, running regex-based checks before committing code, and testing without a dedicated QA team. ...